I think the texting thing is a form of escapism for the WAS when they're still living at home. It's their way of being "separated" while under the same roof. They text their OP or their "enablers" (the people that tell them what they want to hear- yes he's awful, yes you should leave him, etc.) or both. My W quite literally slept with her phone in her hand and responded immediately to every text received regardless of what time it was. Except when I texted her of course. It would take her hours to reply to the simplest message from me. I've read a lot of other LBS's report similar behavior in their WAS.
Once they move out the texting pretty quickly drops off because they don't need that outlet anymore.
